fix #5671 - copy page and module settings from parent

Oqtane.Shared/Models/ModuleContent.cs

@@ -1,3 +1,5 @@
+using System.Collections.Generic;
+
 namespace Oqtane.Models
 {
     /// <summary>
@@ -15,6 +17,11 @@ namespace Oqtane.Models
         /// </summary>
         public string Version { get; set; }
 
+        /// <summary>
+        /// Serialized Settings of the module for import/export.
+        /// </summary>
+        public Dictionary<string, string> Settings { get; set; }
+
         /// <summary>
         /// Serialized Content of the module for import/export.
         /// </summary>